Triazinyl dyes

Abstract

Vat dyestuffs of the formula ##EQU1## wherein R represents alkyl with 1 to 4 carbon atoms, R 1 and R 2 represent hydrogen or alkyl with 1 to 4 carbon atoms and each of A 1 and A 2 represents a vattable radical with 3 to 7 condensed rings are characterized by improved resistance to alkali and are suitable for dyeing and printing the most diverse materials, in particular fibers made from natural or regenerated cellulose.

I claim: 
     
       1. A vat dyestuff of the formula ##EQU2##wherein R is alkyl with 1 to 4 carbon atoms, R 1  and R 2  each is independently hydrogen or alkyl with 1 to 4 carbon atoms and A 1  and A 2  each is independently anthraquinonyl which is optionally substituted by halogen, lower alkyl, lower alkoxy, lower alkanoyl, amino, phenylamino, benzoylamino, halobenzoylamino, phenylbenzoylamino, N,N-diloweralkyl-sulphamidobenzoylamino, lower alkylphenylsulphonylamino and phenylthio, phthaloylacridonyl which is optionally substituted by halogen and trifluoromethyl, benzanthronyl which is optionally substituted by lower alkyl, isothiazolanthronyl, phenylanthrapyrimidinyl and 4-(benzoylaminoanthraquinonyl)-6-lower alkylthio-s-triazin-(2)-yl-amino-1,1'-dianthrimide-2,2'-carbazole. 
     
     
       2. A vat dyestuff according to claim 1 of the formula ##STR6##wherein R is alkyl with 1 to 4 carbon atoms and A 1  and A 2  each is independently anthraquinonyl which is bound in 1- or 2-position and which is optionally substituted by halogen, lower alkyl, lower alkoxy, lower alkanoyl, amino, phenylamino, benzoylamino, halobenzoylamino and phenylthio, or is 3,4-phthaloylacridonyl which is bound in 2- or 8-position and which is optionally substituted by halogen. 
     
     
       3. A vat dyestuff according to claim 2, of the formula ##SPC11## wherein one of the two substituents R 1  ' and R 2  ' is hydrogen and the other is benzoylamino.